“In my prime, I was the ruler. Simple as that. I understand there’s a lot of great fighters who’ve followed me already since I was the champ - and I hope there’s another who comes along does even better because want to see that - but I haven’t seen anyone do what I did yet.

“I haven’t seen anyone turn pro at 154lbs and win the heavyweight championship of the world.

“Even the great Sugar Ray Robinson, the pound-for-pound guy that he was, couldn’t win the light heavyweight title after turning pro as a welterweight. He had a difficult time trying that.

Inside Conor McGregor's afterparty

Step inside Conor McGregor's after fight party.

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Conor McGregor rocks the mixing desks during his after fight party

“So that tells you how hard it is to jump up that kind of weight and win.

“So, pound-for-pound the greatest of all time? It isn’t hard to figure out, Roy Jones Junior is your king of the hill.”